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home | | | recycling industry directory | add your company ] woodfuel in global recycling network waste exchange newsgroups add an exchange listing calender of events r's discussion group woodfuel woodfuel, a form of biomass, is a renewable energy alternative that reduces global dependency on fossil fuels...
of zircon is tetragonal crystal system. the natural colour of zircon varies between colourless, yellow-golden, red, brown, blue, and green. colourless specimens that show gem quality are a popular substitute for diamond and are also known as "matura diamond". zircon is a common accessory to trace mineral...